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python - RegExp match repeated characters

For example I have string:

 aacbbbqq

As the result I want to have following matches:

 (aa, c, bbb, qq)  

I know that I can write something like this:

 ([a]+)|([b]+)|([c]+)|...  

But I think i's ugly and looking for better solution. I'm looking for regular expression solution, not self-written finite-state machines.

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You can match that with: (w)1*


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